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The notion of physicality in vocal training for the performer in South African theatre, with particular reference to the Alexander technique

  • Authors: Cox, Frances Jayne
  • Date: 1991
  • Subjects: Voice culture , Alexander technique , Drama -- Study and teaching
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2134 , http://hdl.handle.net/10962/d1002366 , Voice culture , Alexander technique , Drama -- Study and teaching
  • Description: Voice training has been influenced by separatist attitudes which have allowed for classes which train the body to be separate from those which train the voice. This study acknowledges that to train an actor in separate compartments and then expect the completeness of human expression in performance, is to train under false pretences. There is a need to address the imbalance of separatism and this is examined within the context of voice training. An holistic approach to voice training forms the basis of the argument, which focuses on the need to re-educate the notion of physicality in voice training. Chapter one proposes an understanding of the notion of physicality by drawing on the attitudes of selected theatre practitioners towards the physical nature of the theatre encounter. The expressive energies of the actor's body are responsible for the physicalisation of a play; for this reason the movement of voice and speech is not only examined as source movement, but also as the movement of an actor's response and communication. Chapter two examines some practices which led to attitudes of separatism in voice training, and introduces prevalent practices which are attempting to involve the energy of the physical experience. Chapter three proposes that the Alexander technique be used as the foundation for an awareness of individual physicality. Where chapter one examines the theory of this notion, chapter three proposes an experiential understanding of the same. The Alexander technique is a training in effective body use and it's principles are fundamental to an awareness of body use and functioning. It is argued that these principles should underlie a re-education of physicality. The final chapter of the thesis argues for physicality in South African voice training programmes which would complement the physicality of contemporary theatre forms. It is hoped that this study will provide further incentive for the continued review and adjustment of drama training in South Africa.
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  • Date Issued: 1991

Evolution of the UG2 unit, Bushveld Complex, South Africa : mineral composition and petrological evidence

  • Authors: Everitt, Simon James
  • Date: 2013
  • Subjects: Textures -- South Africa -- Bushveld Complex Petrology -- South Africa -- Bushveld Complex Chromite -- South Africa -- Bushveld Complex Mineralogy -- South Africa -- Bushveld Complex
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4913 , http://hdl.handle.net/10962/d1001573
  • Description: Several disequilibrium textures are found to occur within the hanging wall and footwall of the UG2 chromitite layer of the Bushveld Complex, South Africa. These textures include plagioclase chadacrysts found included within orthopyroxene and clinopyroxene as well as the orthopyroxenes exhibiting round crystal boundaries that appear to be resorbed. Textures found within the UG2 stratigraphy such as linear boundaries and 120° triple junctions at interfaces of adjacent plagioclase or pyroxene grains also suggest that recrystallization has taken place. The presence of both disequilibrium textures and recrystallization textures would suggest that a complex emplacement history has occurred. Ideally, this would be expected to be manifested by minerals of the same type but which are texturally distinct showing different composition. However this has been found not to be the case; minerals that suggest disequilibrium textures show similar compositions to the minerals which appear to have formed in equilibrium. This is also the same for recrystallized crystals which show the same compositions as crystals that have not been recrystallized. For example tabular clinopyroxene, which has a compositional range of En 44.6 to En 50.5, is indistinguishable from clinopyroxene occuring as discontinuous rims, En 44.3-48.2, and as intergranular necking connecting primocrysts of orthopyroxene ( En 44.3-50.4). Similarly, plagioclase occurring as inclusions with An 66.3-76.0 is indistinguishable from plagioclase occurring as zoned or recrystallized interstitial grains ( An 69.0- An 77.4). Compositional variation has however, been found to be controlled to an extent by stratigraphy in that minerals show different compositions within one layer to the same minerals within another layer, consistent with an evolving magma composition. It is concluded therefore that while composition is not texturally controlled it is to an extent stratigraphy controlled and that the evidence collected within the study supports two models for the formation of chromite within the Bushveld complex. The evidence is consistent with a combination of the magma mixing model and magma injection model to account for the textures and compositional variations found within the study. The evidence may also show support for models involving late modification of minerals by magmatic fluids but not as prominently as for the models mentioned above , Microsoft� Word 2010 , Adobe Acrobat 9.53 Paper Capture Plug-in
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  • Date Issued: 2013

A study of factors enhancing truck driver retention at Tanker Services, Imperial Logistics, South Africa

  • Authors: Goss, Cayley Amy
  • Date: 2016
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:868 , http://hdl.handle.net/10962/d1021250
  • Description: The aim of this qualitative study was to gain an understanding of the factors that enhance truck driver retention at Tanker Services, Imperial Logistics, South Africa. The specific objectives of the study were to (1) explore factors which influence the retention of truck drivers from the perspectives of immediate supervisors of these drivers at Tanker Services Branches in Durban, Johannesburg, and Cape Town; (2) to identify the means Tanker Services adopts in meeting factors influential to truck driver retention; and (3) to provide recommendations on how to successfully retain truck drivers in this logistics organisation in South Africa. The research methodology of this study involved interviewing ten immediate managers of truck drivers at Tanker Services, Imperial Logistics. Specifically, data was collected through the use of individual, in-depth and semi-structured interviews to investigate the most influential factors affecting truck driver retention. The results of this research outline factors important to the truck drivers at Tanker Services from the perspectives of their immediate supervisors - most of whom were previously truck drivers themselves. The findings of this research identified the general factors that affect Tanker Services Truck drivers as follows: formal and informal rewards, competitive compensation, a work environment of quality equipment, high safety standards and recreational facilities. Furthermore, interpersonal relations and company reputation were found most influential to truck drivers in this South African logistics context.
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  • Date Issued: 2016

John Wesley's means of evangelism

  • Authors: Gribble, James
  • Date: 1974
  • Subjects: Wesley, John, 1703-1791 Evangelistic work Methodist Church -- Doctrines
  • Language: English
  • Type: Thesis , Bachelor , BDiv
  • Identifier: vital:1255 , http://hdl.handle.net/10962/d1012096
  • Description: This essay is an attempt to evaluate the methods of evangelism used by John Wesley during the course of his long ministry in the eighteenth century. Wesley's methods are important, since by their use he exercised a remarkable influence upon the religious and social life of eighteenth-century England. They have a continuing importance, too, for a Church that wants to carry out her Lord's "Great Commission" effectively. In the history of the Church Wesley stands in the front rank of those who have significantly carried forward the mission of the Church. Therefore we do well to pause and learn what we can from his example and experience. Intro., p. 1.
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  • Date Issued: 1974

Using experience from previous failed implementations to improve future lean implementation strategy

  • Authors: Hiles, Charmelle Amanda
  • Date: 2015
  • Subjects: Lean manufacturing -- Management Production planning
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: http://hdl.handle.net/10948/11047 , vital:26880
  • Description: The main objective of the study was to ascertain the presence of the identified critical success factors for lean sustainability in a chemical manufacturing company in Port Elizabeth. The critical success factors that formed part of the research included leadership involvement and commitment, management involvement and commitment, employee engagement and organisational culture. The methodology used was one of a positivistic approach. A questionnaire was utilized and the responses were analyzed using various statistical methods. Based on the results from the analysis, recommendations and conclusions could be drawn. The inferential results of the study indicated that all the critical success factors identified for this study were present within the organisation. However, there were still a large percentage of respondents that remained neutral across all the questions which could indicate reasons why previous attempts in lean implementation failed. The recommendations provided were based on the findings of the study. An implementation strategy was identified and outlined. This strategy and recommendations will assist in providing a sound platform for a sustainable lean initiative within the organisation.
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  • Date Issued: 2015

Bayesian accelerated life tests: exponential and Weibull models

  • Authors: Izally, Sharkay Ruwade
  • Date: 2016
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/3003 , vital:20351
  • Description: Reliability life testing is used for life data analysis in which samples are tested under normal conditions to obtain failure time data for reliability assessment. It can be costly and time consuming to obtain failure time data under normal operating conditions if the mean time to failure of a product is long. An alternative is to use failure time data from an accelerated life test (ALT) to extrapolate the reliability under normal conditions. In accelerated life testing, the units are placed under a higher than normal stress condition such as voltage, current, pressure, temperature, to make the items fail in a shorter period of time. The failure information is then transformed through an accelerated model commonly known as the time transformation function, to predict the reliability under normal operating conditions. The power law will be used as the time transformation function in this thesis. We will first consider a Bayesian inference model under the assumption that the underlying life distribution in the accelerated life test is exponentially distributed. The maximal data information (MDI) prior, the Ghosh Mergel and Liu (GML) prior and the Jeffreys prior will be derived for the exponential distribution. The propriety of the posterior distributions will be investigated. Results will be compared when using these non-informative priors in a simulation study by looking at the posterior variances. The Weibull distribution as the underlying life distribution in the accelerated life test will also be investigated. The maximal data information prior will be derived for the Weibull distribution using the power law. The uniform prior and a mixture of Gamma and uniform priors will be considered. The propriety of these posteriors will also be investigated. The predictive reliability at the use-stress will be computed for these models. The deviance information criterion will be used to compare these priors. As a result of using a time transformation function, Bayesian inference becomes analytically intractable and Markov Chain Monte Carlo (MCMC) methods will be used to alleviate this problem. The Metropolis-Hastings algorithm will be used to sample from the posteriors for the exponential model in the accelerated life test. The adaptive rejection sampling method will be used to sample from the posterior distributions when the Weibull model is considered.
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  • Date Issued: 2016

Volatility transmission across South African financial markets: does the bull – bear distinction matter?

  • Authors: Jaramba, Toddy
  • Date: 2011
  • Subjects: Finance -- South Africa , Financial institutions -- South Africa , Monetary policy -- South Africa , Portfolio management -- South Africa , Stock exchanges -- South Africa , Foreign exchange -- Mathematical models , Bond market -- South Africa
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:1106 , http://hdl.handle.net/10962/d1013396
  • Description: The volatility transmission in financial markets has important implications for investment decision making, portfolio diversification and overall macroeconomic stability. This paper analyses volatility transmission across four South African financial markets that is the stock, bond, money and foreign exchange markets, using daily data for the period 2000-2010. It also shows whether the volatilities in the SA financial markets present a different behaviour in bull and bear market phases. The effects of the international markets volatility to the local markets volatility was also looked at in this study. To obtain estimates of market volatility, the study experimented with various volatility models that include the GARCH, EGARCH and TARCH. To examine volatility interaction and the transmission of volatility shocks, a VAR model was estimated together with block exogeneity, impulse response and variance decomposition. The study found that there is limited volatility transmission across the SA financial markets. The study also found that the money market is the most exogenous of all markets since the other three financial markets volatility is insignificant to the money market (see impulse response results). For the bond market, volatility transmission was characterized with a decreasing trend. With regard to international markets volatility, it concluded that, the shocks in the international markets will eventually affect the movement in the local markets. The results also highlighted that, world and local markets are important in accelerating the volatility transmission in SA financial markets depending on whether they are in their bull or bear phases. In the case of South Africa, the study found that volatility transmission across markets is higher during bear market periods than bull market periods. Basing on the study results which show that the volatility transmission is limited across SA financial markets, the implication to local and international investors is that there is a greater potential for diversifying risk by investing in different South African financial markets.
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  • Date Issued: 2011

Geochemical exploration for copper - cobalt in the Democratic Republic of Congo, Central African Copperbelt: a case study on PR851

  • Authors: Katombe-Kisumbule, Paul
  • Date: 2016
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/3035 , vital:20354
  • Description: The PR851 licence area is located at about 80 km west from the town of Likasi in the district of Haut-Katanga and 175 km north-west of Lubumbashi, the capital city of Katanga Province in the Democratic Republic of Congo. The exploration licence was granted by the government of the Democratic Republic of Congo to First Quantum Minerals Ltd through its Congolese subsidiary Compagnie Minière de Sakania Sprl (CoMiSa Sprl) under certificate N˚ CAMI/CR/70/2003 on the 10th of October 2003 for a period of 5 years with a possibility of renewal for 3 years in respect to the new Congolese mining code. The PR851 area lies on fragments of Mines Subgroup rocks of the Roan Group in the Congolese Copperbelt where most of the Cu-Co and stratiform-stratabound deposits such as Kipushi, Ruashi-Etoile, Kinsevere, Kipoi, Luishya, Luswishi, Shituru, Kamoya, Kambove, Tenke- Fungurume, Shinkolobwe, Swambo, Mindingi and Kamoto among others are found. During the 20th century, the Union Minière du Haut Katanga (U.M.H.K.) undertook mineral exploration in the Congolese Copperbelt and numerous copper- and cobalt-occurrences were identified (for instance Kibamba copper occurrence in PR851 area). From 2003, the Compagnie Minière de Sakania Sprl initiated a grassroots exploration program in PR851 area and geochemical exploration survey as one of the mineral exploration tools was implemented to aim at detecting copper and cobalt concentration in soil. The B horizon of the thick tropical soil in the area was sampled and soil samples were sent to Genalysis laboratories in Johannesburg, Republic of South Africa for main chemical analysis of Cu and Co only, whereas 10% of analyzed samples were dispatched to Perth, Western Australia for quality control analysis. Thresholds for anomalies of copper and cobalt were defined by literature comparison, standard deviations and spatial analysis. The anomalies were tested at a later stage by reverse circulation / diamond drilling during the year of 2005 to 2008 and the Cu-Co resources were estimated by Digital Mining Services of Harare, Zimbabwe in the year of 2008. Geological logging of chips from reverse circulation and diamond drill cores revealed that copper mineralization is represented by malachite, chrysocolla, chalcopyrite and bornite whereas cobalt mineralization appeared in form of heterogenite. The source of supergene mineralization remains unknown. Recommendations have been made to undertake more geological exploration work in order to fully investigate the geological setting and structural architecture of the region, which may result in a better understanding of the Cu-Co mineralization system and ore genesis. The latter has been no consensus up-to-date and different theories have been proposed to discuss the ore genesis, including syn- and dia- genetic, synorogenic and sulphide remobilization to late-to-post- orogenic Cu-Zn-Pb Kipushi-type deposit. However, geological observations favored that the diagenetic and syngenetic models are applicable to numerous deposits in the Central African Copperbelt.
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  • Date Issued: 2016

Assessing the impact of qualified mathematics and science teachers in the Buffalo city area

  • Authors: Kopolo, Lungiswa
  • Date: 2009
  • Subjects: Employee retention -- South Africa -- Buffalo City Municipality , Employees -- Recruiting -- South Africa -- Buffalo City Municipality , Mathematics teachers -- South Africa -- Buffalo City Municipality , Science teachers -- South Africa -- Buffalo City Municipality , Education -- Personnel management , School -- Personnel management -- South Africa
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:8573 , http://hdl.handle.net/10948/1173 , Employee retention -- South Africa -- Buffalo City Municipality , Employees -- Recruiting -- South Africa -- Buffalo City Municipality , Mathematics teachers -- South Africa -- Buffalo City Municipality , Science teachers -- South Africa -- Buffalo City Municipality , Education -- Personnel management , School -- Personnel management -- South Africa
  • Description: Mathematics and science form an integral part people’s daily lives. South African people suddenly find themselves on a technological highway, where mathematical, scientific and creative thinking as well as problem solving skills take centre stage. However many people fear these, and believe that they are unable to tackle them. Mathematics and science educators therefore have need to have knowledge and understanding regarding 6 the foundation of the teaching of these subjects in the intermediate and senior phases at schools. This should enable them to contribute positively towards changing people’s perceptions about these subjects. Based on the above information I felt it imperative for me to investigate the impact of shortages of maths and science educators with special reference to the Buffalo City Area. Purpose of the study: 1 To determine whether schools are able to attract and retain qualified maths and science educators, 2 To identify the quantity of quality maths and science learners schools are able to produce for tertiary education, 3 To investigate the rate of turnover of maths and science educators, 4 To identify the number of maths and science learners who are willing to study maths and science at tertiary level and thereafter join the teaching fraternity.
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  • Date Issued: 2009

The impact of macroeconomic and financial factors on the performance of the housing property market in South Africa

  • Authors: Kwangware, Debra
  • Date: 2009
  • Subjects: Microeconomics , Housing -- South Africa , Housing -- Prices -- South Africa , Real property -- South Africa , Interest rates -- South Africa , Foreign exchange rates -- South Africa
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:1042 , http://hdl.handle.net/10962/d1005641 , Microeconomics , Housing -- South Africa , Housing -- Prices -- South Africa , Real property -- South Africa , Interest rates -- South Africa , Foreign exchange rates -- South Africa
  • Description: This study exammes the impact of macroeconomic and financial variables on the performance of the housing property market in South Africa using monthly data for the period January 1996 to June 2008. Orthogonalised and non-orthogonalised house price returns and real estate returns are utilised as proxies for the housing property market in separate models. Three main issues were empirically analysed in relation to the linkage between selected variables and the housing property market. The first aspect examined the relationship between selected macroeconomic and financial factors and property returns. Secondly, the study examined the influence that a unit shock to each variable has on property returns over a period of time. The third aspect focused on determining the proportion of property returns variation that results from changes in the macroeconomic and financial variables. VAR modelling was thus adopted to empirically analyse these three aspects. The results reveal that house price returns are influenced by most of the macroeconomic and financial variables used in this study. Specifically, the real effective exchange rate, interest rate spread and manufacturing production positively impact on house price returns while the domestic interest rate, the dividend yield and expected inflation have a negative effect. Furthermore, manufacturing production has a lagged effect on house price returns while the real effective exchange rate and domestic interest rate have a contemporaneous effect. Real estate returns are not influenced by most of the variables except for the domestic interest rate and dividend yield which have a negative effect.
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  • Date Issued: 2009

An investigation into the prevalence and growth of phishing attacks against South African financial targets

  • Authors: Lala, Darshan Magan
  • Date: 2016
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/3157 , vital:20379
  • Description: Phishing in the electronic communications medium is the act of sending unsolicited email messages with the intention of masquerading as a reputed business. The objective is to deceive the recipient into divulging personal and sensitive information such as bank account details, credit card numbers and passwords. Attacks against financial services are the most common types of targets for scammers. Phishing attacks in South Africa have cost businesses and consumers substantial amounts of financial loss. This research investigated existing literature to understand the basic concepts of email, phishing, spam and how these fit together. The research also looks into the increasing growth of phishing worldwide and in particular against South African targets. A quantitative study is performed and reported on; this involves the study and analysis of phishing statistics in a data set provided by the South African Anti-Phishing Working Group. The data set contains phishing URL information, country code where the site has been hosted, targeted company name, IP address information and timestamp of the phishing site. The data set contains 161 different phishing targets. The research primarily focuses on the trend in phishing attacks against six South African based financial institutions, but also correlates this with the overall global trend using statistical analysis. The results from the study of the data set are compared to existing statistics and literature regarding the prevalence and growth of phishing in South Africa. The question that this research answers is whether or not the prevalence and growth of phishing in South Africa correlates with the global trend in phishing attacks. The findings indicate that certain correlations exist between some of the South African phishing targets and global phishing trends.
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  • Date Issued: 2016

An integrated skills development model for emerging construction contractors in the Eastern Cape

  • Authors: Lazarus, Spencer
  • Date: 2005
  • Subjects: Contractors -- South Africa -- Eastern Cape , Contractors -- Training of -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:10928 , http://hdl.handle.net/10948/170 , Contractors -- South Africa -- Eastern Cape , Contractors -- Training of -- South Africa -- Eastern Cape
  • Description: One of the challenges faced by many government decision-makers today relates to the need for a construction development programme that comprehensively addresses the challenges faced in delivery of building and infrastructure projects. Investment into such programmes should be justified and measured by increased contractor capacity to execute projects and grow their businesses. The Eastern Cape Development Corporation (ECDC) intends to develop and pilot an emerging contractor development programme with the assistance of the Council for Scientific and Industrial Research (CSIR). In implementing the project, the CSIR and the ECDC will assume the role of the project managers, responsible for planning, executing and coordinating the entire training and mentorship programme. Suitably qualified training providers and mentors have been sourced from private enterprises and individuals. Sixty contractors throughout the province will be selected to form part of the program. Training providers and mentors will provide high quality inputs to enable a group of selected contractors to be assessed and accredited by the Construction Education and Training Authority (CETA) in terms of the National Qualifications Framework (NQF). This dissertation addresses the requirements that an integrated development model needs to be effective in terms of emerging contractors’ further development and sustainable growth.
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  • Date Issued: 2005

Legionella risk management in business firms within the East London and border areas of the Eastern Cape

  • Authors: Mahwehwe, Christopher
  • Date: 2011
  • Subjects: Employee health promotion -- South Africa -- East London , Legionella -- South Africa -- East London , Communicable diseases -- South Africa -- East London
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:8765 , http://hdl.handle.net/10948/d1011817 , Employee health promotion -- South Africa -- East London , Legionella -- South Africa -- East London , Communicable diseases -- South Africa -- East London
  • Description: The pace at which change is occurring in the life of human beings, due to technological advancement, could be described as logarithmic. This fast-paced change is not just of consequence to the individual, but to countries, governments, companies, big and small systems like villages and sports clubs and the like, as well. This study case was inspired by the fact that what was a little-known threat yesterday, could suddenly become a crippling matter. It is, therefore, critical for individuals and businesses to consider risk not just in the usual context but with an open mind. This is especially true for systems in the Third World or developing nations where evolutionary stages of advancement and development are known to have been skipped due to forced or influenced adoption by the advanced or First World dictates. An example is the adoption of Carbon Emission Minimisa tion Pacts that have also been mooted for developing nations, even though their participation in causing the past Industrial Revolution pollution was minimal. A small operation in the Eastern Cape may, today, see no need to attract an overseas customer, not realising that the local customer may enter a merger or be bought out by an international organisation which would demand international protocols on the local supplier. Such is the risk with Globalisation. Local businesses should embrace global competitive practices for sustainability in the global business arena that is surely upon the business place today and the short term. South African businesses are no longer protected by the country borders, or the government and political systems such as the apartheid-born sanctions and tariff regimes. The objective of this study of Legionella bacteria risk management by business firms in the Eastern Cape (East London and Border Areas) is to obtain an insight into how they fare on one of the risks that, in Europe, is legislated and, in many parts of the First World, is regarded as fundamental. Beside the globalisation issues mentioned above, the South African workforce has been noted as highly affected by HIV and TB, which are symptomatic of people susceptible to Legionnaire‟s Disease. The high cost and skills shortage in the South African industry demand great care in order to prevent further loss, due to sick absenteeism or the death of workers. The study included a comprehensive literature review of issues around Legionella bacteria in industrial operations and how ill effects could be prevented and managed. A questionnaire was then drawn up and used to check for awareness, capability and ascertain what motivational factors could influence Legionella risk management by businesses in the geographical study area. All businesses with facilities utilising water cooling towers, safety showers, waste water treatment plants, humidifier air conditioning and water fountains, were presented with the questionnaire. A 56 percent return was achieved and responses were processed and analysed using Microsoft Excel on a Windows XP computer package. The findings showed that there was a poor awareness of Legionella bacteria and the risk they posed, a factor that may be used to explain the poor questionnaire returns. The capability assessment also showed a weak status. Legislation, proof of outbreak and fines were determined as effective would-be motivators for full Legionella risk management. The study concluded with recommendations for awareness programmes by interested bodies like the Legionella Action Group, Department of Labour and companies providing Legionella consulting services. While legislation and, therefore, fines, were not yet applied in South Africa, the drive for employee and community welfare should be adequate motivating factors for businesses to manage Legionella risk. Foreign capital inflow into the South African economy was also a factor that should be considered by businesses that looked to expand and need to access these funds through mergers or acquisitions. These funds would require financial as well as technical audits that show adequate risk protection.
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  • Date Issued: 2011

Characterisation of a plasmodium falciparum type II Hsp40 chaperone exported to the cytosol of infected erythrocytes

  • Authors: Maphumulo, Philile Nompumelelo
  • Date: 2013
  • Subjects: Erythrocytes , Heat shock proteins , Plasmodium falciparum , Molecular chaperones , Malaria -- Prevention -- Research , Protein folding , Proteins -- Analysis , Malaria -- Immunological aspects
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4128 , http://hdl.handle.net/10962/d1015681
  • Description: Heat Shock 40 kDa proteins (Hsp40s) partner with heat shock 70 kDa proteins (Hsp70s) in facilitating, among other chaperone activities; correct protein transport, productive protein folding and assembly within the cells; under both normal and stressful conditions. Hsp40 proteins regulate the ATPase activity of Hsp70 through interaction with the J-domain. Plasmodium falciparum Hsp70s (PfHsp70s) do not contain a Plasmodium export element (PEXEL) sequence although PfHsp70-1 and PfHsp70-3 have been located outside of the parasitophorous vacuole. Studies reveal that a type I P. falciparum (PfHsp40) chaperone (PF14_0359) stimulates the rate of ATP hydrolysis of the cytosolic PfHsp70 (PfHsp70-1) and that of human Hsp70A1A. PFE0055c is a PEXEL-bearing type II Hsp40 that is exported into the cytosol of P. falciparum-infected erythrocytes; where it potentially interacts with human Hsp70. Studies reveal that PFE0055c associates with structures found in the erythrocyte cytosol termed “J-dots” which are believed to be involved in trafficking parasite-encoded proteins through the erythrocyte cytosol. If P. falciparum exports PFE0055c into the host cytosol, it may be proposed that it interacts with human Hsp70, making it a possible drug target. The effect of PFE0055c on the ATPase activity of human Hsp70A1A has not been previously characterised. Central to this study was bioinformatic analysis and biochemical characterisation PFE0055c using an in vitro (ATPase assay) approach. Structural domains that classify PFE0055c as a type II Hsp40 were identified with similarity to two other exported type II PfHsp40s. Plasmids encoding the hexahistidine-tagged versions of PFE0055c and human Hsp70A1A were used for the expression and purification of these proteins from Escherichia coli. Purification was achieved using nickel affinity chromatography. The urea-denaturing method was used to obtain the purified PFE0055c whilst human Hsp70A1A was purified using the native method. PFE0055c could stimulate the ATPase activity of alfalfa Hsp70, although such was not the case for human Hsp70A1A in vitro.
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  • Date Issued: 2013

Considerations for implementating market based mechanisms in combating climate change in South Africa

  • Authors: Marais, Frans
  • Date: 2014
  • Subjects: Climatic changes -- Economic aspects -- South Africa
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:1093 , http://hdl.handle.net/10962/d1012952
  • Description: Since the first period of the Kyoto Protocol, there has been a growing concern that the burden of reducing greenhouse gas emissions should not only be borne by developed countries, but developing countries as well. South Africa, as the 18th highest emitter of greenhouse gases in the world and highest in Africa, has a significant responsibility to reduce its emissions levels. The South African government is currently in the process of implementing a carbon tax for its short term response to climate change and considering the implementation of a carbon market as a medium to long term response to climate change. Both of these market based mechanisms are widely deemed effective in the mitigation of greenhouse gas emissions by economists, however are also known to have negative social and economic implications upon an economy. This study identifies these implications and attempts to provide considerations on how to alleviate the implications through the most appropriate process of revenue recycling. The negative effects of Implementing a carbon tax or carbon market could be severe as and not limited to: a significant decline in GDP, a reduction in the standard of living for certain households, a fall in a country's exports and even an increase in poverty. South Africa's environmental and development policies place a strict precedence on the protection of the poor and the prevention of economic hardship induced by such policies. This places significant importance on the prevention of these externalities from occurring. A primary means of doing so is through the process of revenue recycling, however, certain channels of revenue recycling are by no means helpful, hence the most appropriate channel needs to be identified. The study carried out a multiple case study analysis on Ireland, Mexico, New Zealand and Norway, to determine what effects a carbon tax had on their economies and how these effects were mitigated through carbon tax revenue recycling. An additional analysis of the EU ETS was carried out to determine how the EU ETS was implemented and the controversies and concerns that arose during its implementation. The findings of this analysis were then compared to a number of South African economist’s case studies, and the most appropriate method of revenue recycling identified and possible solutions to the EU ETS controversies found. The study concludes that a food subsidy has the potential to provide positive effects on welfare employment and GDP; therefore could be considered to be the most appropriate method of revenue recycling. However, these effects are limited to be experienced only at low levels of a carbon tax, hence, short term in nature. The study therefore provides a further consideration that the use of multiple channels for revenue recycling needs to be explored that could provide stable longer term effects. In addition, in the implementation of a carbon market, the study concludes that government should consider using an auction approach in the initial allocation phase of an ETS and the use of a centralized registry for monitoring and controlling of information and transactions.
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  • Date Issued: 2014

An enquiry into the formative and summative assessment procedures, and perceptions thereof, of grade 10 mathematics teachers : a Namibian case study

  • Authors: Marongwe, Anesu Desmond
  • Date: 2013
  • Subjects: Mathematics -- Study and teaching (Secondary) -- Namibia
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1385 , http://hdl.handle.net/10962/d1001513
  • Description: The purpose of this study was to gain insight into observed discrepancies between continuous assessment and final examination average marks in Grade 10 Mathematics in the Oshikoto region of Namibia. The study is framed as a case study and is grounded within the interpretive paradigm. A mixed methods approach was applied, eliciting both quantitative as well as qualitative data. The study took place in two phases. In Phase 1, continuous assessment and Grade 10 final examination average marks for 62 Junior Secondary Schools for the period 2008-2010 were gathered and analyzed. Schools were characterized in terms of the relationship between their continuous assessment and final examination average marks for each of the three years. Phase 2, which was informed by Phase 1, took the form of structured interviews with a sample of three Mathematics teachers and three principals along with a focus-group interview of twelve teachers in order to investigate more deeply the perceptions of teachers and principals toward assessment policy and practice. The study shows that Grade 10 assessment practice in Namibian schools is far from ideal. Many teachers are not fully conversant with the various continuous assessment components as outlined by policy, and teachers are not confident about setting appropriate continuous assessment tasks. There is a strong perception that continuous assessment marks can easily be inflated and those teachers who gave high continuous assessment marks to their learners were generally perceived as being either incompetent or dishonest. While continuous assessment was seen as an important component of teaching and learning, it is evident that teachers and principals would welcome greater clarity, along with standardization and moderation, with respect to continuous assessment practice.
  • Full Text:
  • Date Issued: 2013

Socio-economic benefits of agricultural projects to surrounding communities: the case of Qamata Irrigation Scheme in the Eastern Cape, South Africa

  • Authors: Masela, Zandile
  • Date: 2017
  • Subjects: Agricultural development projects -- South Africa -- Eastern Cape , Agriculture -- Economic aspects -- South Africa -- Eastern Cape , Irrigation farming -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10353/4716 , vital:28501
  • Description: The Qamata Irrigation Scheme (QIS) is one of the largest irrigation schemes in South Africa. Despite substantial state investment, community members have only derived limited benefits from the scheme, leading the government efforts to revitalize the scheme. Many studies have been conducted about QIS but none of them have analyzed the effects of the QIS on the surrounding communities. This study investigated the socio-economic benefits of QIS to surrounding communities. For the purposes of this study, the units of analysis were the surrounding household members, questionnaires were used to collect data. Probabilistic sampling of random sampling method was used to select the villages; respondents’ were availability selected with sample size of 197 households. Quantitative and qualitative data were collected from the participants. To analyse data, descriptive statistics and multinomial logit regression model were used. The study found out that female-headed households constitute 63.45 percent compared to male-headed households at 36.55 percent. The average age of the households in the villages that are within the radius of 10km is 58 years, while it is 59 years in villages that are beyond the 10km radius. In villages within the radius of 10km, 86.08 percent of respondents are unemployed, 5.70 percent are employed at the scheme and 8.23 percent are self-employed. In villages beyond 10km, 84.62 percent of respondents are unemployed, 5.13 percent are employed at the scheme and 10.26 percent are self-employed. In both villages, 71 percent of respondents reported that that they do not get feed supply from the scheme while 29 percent of respondents reported that they get feed supply from the scheme. From the overall distribution of villages within and beyond the radius of 10km, 80 percent of respondents reported that they do not get job opportunities from the QIS while 20 percent of respondents reported that they get job opportunities from the QIS. The study shows that 53 percent of respondents from villages within the radius of 10km are low-benefitting, 33 percent of respondents are intermediate-benefitting and 14 percent of respondents are high-benefitting from the scheme, while in villages beyond the radius of 10km, 97 percent of respondents are low-benefitting, 3 percent of respondents are intermediate-benefitting and none of the respondents is high-benefitting from the scheme. Furthermore, the study, through the multinomial logit regression model, shows that gender for intermediate benefitting has a negative coefficient (-1.70) and shows a significance of 10 percent On the other hand, gender for high benefitting has a positive coefficient (2.57) and shows a significance of 1 percent. Distance from the scheme has a negative coefficient (-3.08) and shows a significance of 1 percent. Access to farmland has a positive coefficient (2.33) and shows a significance of 10 percent. The study recommends that surrounding communities should own home gardens so that they can grow fresh produce and create job opportunities. The surrounding communities are also encouraged to own more farmlands or produce their own crops so they can also learn from the skills of the scheme.
  • Full Text:
  • Date Issued: 2017

Assessing the efficacy of integrating human resource development with organization strategy as a precursor to strategic management in the Eastern Cape Legislature (2006-2012)

  • Authors: Matomane, Nyanisile Frisco
  • Date: 2014
  • Subjects: Personnel management -- South Africa -- Eastern Cape Legislators -- Services for Public administration -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MPA
  • Identifier: http://hdl.handle.net/10353/4560 , vital:28418
  • Description: This research article studies the factors that are likely to affect the visible part of human resource development (HRD)– the use of HRD activities in the Legislature Sector. It is argued that the active use of HRD activities as such does not indicate the role HRD plays in a Legislature’s business: rather, one has to pay attention to HRD orientation that captures the paradigm of an organization as regards the development of people. In this empirical study of Legislature Sector, several factors related to the organization, strategy, HRD function, and HRD person are identified as meaningful predictors of HRD orientation. Results imply that the outcomes of HRD are also dependent on factors outside the traditional authority of HRD function. The model that is formed based on the results helps those involved in HRD to understand the inherent linkages and holistic nature of people development in organizations.
  • Full Text:
  • Date Issued: 2014

Challenges facing a financial insitution to improve service quality and customer retention

  • Authors: Meyer, I T
  • Date: 2001
  • Subjects: Banks and banking -- Customer services -- South Africa , Bank management -- South Africa , Financial services industry -- South Africa
  • Language: English
  • Type: Thesis , Masters , MTech
  • Identifier: vital:10846 , http://hdl.handle.net/10948/45 , Banks and banking -- Customer services -- South Africa , Bank management -- South Africa , Financial services industry -- South Africa
  • Description: The financial industry and more specifically Retail banking is a very competitive industry. The profit margins are shrinking with the entrance of newcompetitors into the market place. During the last two to three years various foreign banks have opened offices in South Africa, cherry picking the high net worth customers fromthe traditional high street banks. The product range between these banks is the same, maybe at times presented in a different wrapping. The one differential factor between the various banks is service and the quality thereof. The researcher, being a banker, decided to investigate how to improve the quality of service which is the main problemof this study. The secondary problems or subproblems are: * How to solve service breakdown? * How to retain customers after a service breakdown? The researcher first did a literature survey focusing on the key drives of this research namely: * Improving quality service. * Problem resolution. * Customer retention. An empirical investigation was also undertaken focusing on the personal market segment and the high net worth individuals. The demarcation of the survey was restricted to a specific area on the South Coast of KwaZulu Natal, and in particular the retail market and three specific branches on the South Coast, namely: * Scottburgh; * Margate, and * Port Shepstone. The main finding of the empirical survey indicates an average service rating of 8.38, which is in excess of the financial institution’s national service objective of 8.22 for 2001. This indicates that in most areas the service quality of this financial institution is good. The results fromthe literature survey as well as the empirical investigation indicated that service quality can only be achieved through a collective effort from all role players within the bank. The resolution of service breakdown needs to be controlled and managed to rectify breakdowns effectively within specific time limits that are acceptable to the individual customer. The barriers to retain customerswill become less effective should the financial institution not be able to restore or improve service quality for their customers.
  • Full Text:
  • Date Issued: 2001

Democracy in Lesotho: theory and practice of opposition

  • Authors: Mohapi, Refiloe Alphonce
  • Date: 2006
  • Subjects: Democracy -- Lesotho , Political parties -- Lesotho , Lesotho -- Politics and government
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2806 , http://hdl.handle.net/10962/d1003016 , Democracy -- Lesotho , Political parties -- Lesotho , Lesotho -- Politics and government
  • Description: Using theoretical insights from elsewhere, this thesis examines and explains Lesotho’s opposition. It argues that the decline of single-member constituency and the rise of Mixed Member Proportionality (MMP) has weakened the prospects for a strong opposition in Lesotho; more parties in parliament have strengthened the hold of the ruling party. These parties cannot overturn the parliamentary decisions of the ruling Lesotho Congress for Democracy (LCD), which continues to win more than 90% of majority seats in successive elections. So, most bills and motions passed in parliament have support of the majority of the MPs of LCD. Opposition parties have little legislative impact in challenging the policies of government. Paradoxically, MPs of the LCD are often the only source of opposition in the country’s parliament.
  • Full Text:
  • Date Issued: 2006
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